Louver grease filter

A grease filter comprising:

• spaced front and rear walls joined together at their perimeter so as to define a top, bottom and sides,
• said walls each having a series of transverse louvers extending into the space between the walls from the plane of the exterior face of each wall,
• the louvers of each series opening downwardly and the series of louvers in the rear wall being offset from the series of louvers in the front wall along the axis of air movement through the filter;
• and
• filter media disposed in the space between said front and rear walls.

A filter for airborne grease particles which is disposed in a plane which is at an acute angle from the vertical, said filter comprising:

• spaced front and rear walls joined together by lateral portions at the perimeter of the walls,
• said front wall having a series of downwardly opening transverse louvers which project inwardly from the plane of the exterior front face of said front wall into the space between said walls,
• said rear wall having a series of downwardly opening transverse louvers which project inwardly from the plane of the exterior rear face of said rear wall into the space between said walls, the series of louvers of said rear wall being offset from the series of louvers of said front wall relative to the principal path of air movement toward and away from said filter so that the air is forced to follow a tortuous path from said front face to said rear face,
• drain openings being formed in and disposed adjacent the bottom of said walls;
• and
• a filter media disposed within the space between said front and rear walls.